#bottom{
    width: 780px;
    height: 20px;
    background-color: #2286C6;
    float: left;
    margin-top: 2px;
    border: white solid 4px;
}
#bot li{
    text-align: center;
}
#bot a{
    color: black;
    font-family: 黑体;
    font-size: 14px;
}
#bot span{
    color: white;
    font-family: 宋体;
    font-size: 14px;
}